Determining giftability of a product

ABSTRACT

Methods for making gift recommendations are disclosed. The interests of an intended recipient are identified as are the interests associated with a particular product. Products corresponding to the recipient&#39;s interests are identified and then ranked according to giftability. Giftability indicates the appropriateness of a product for giving as a gift. Products may also be ranked according to appropriateness for a category or occasion. Giftability may be specified or inferred from one or more of gift-wrapping requests, gifting references in comments or reviews, and sales surges during holidays. A Naïve-Bayes-type method may be used to infer the giftability of products for which such data is not available.

BACKGROUND

1. Field of the Invention

This invention relates to systems and methods for making productrecommendations appropriate for a recipient's interest and that aresuited for giving as a gift.

2. Background of the Invention

One of the facets of shopping is gifting. Gifting may be the act ofgiving a present to somebody because of an occasion (e.g., birthday) orevent (e.g., house warming party). People may also treat themselves orloved ones to a gift. Regardless of the occasion or the reason forgifting, there is often one common goal: delight the receiver. Althoughsome approaches have been used to provide recommendations according tothe interest of the recipient of a gift, these approaches do not takeinto account whether products related to the recipient's interests arein fact suitable for giving as a gift.

BRIEF DESCRIPTION OF THE DRAWINGS

In order that the advantages of the invention will be readilyunderstood, a more particular description of the invention brieflydescribed above will be rendered by reference to specific embodimentsillustrated in the appended drawings. Understanding that these drawingsdepict only typical embodiments of the invention and therefore are nottherefore to be considered in limiting the invention's scope, theinvention will be described and explained with additional specificityand detail through use of the accompanying drawings, in which:

FIG. 1 is a schematic block diagram of an example computer system;

FIG. 2 is a schematic block diagram of an example network environment;

FIG. 3 is a process flow diagram of a method for selecting giftableproducts in accordance with an embodiment of the present invention;

FIG. 4 is a process flow diagram of a method for assigning a giftabilityscore to a product in accordance with an embodiment of the presentinvention;

FIG. 5 is a process flow diagram of a method for assigning a categorygiftability score to a product in accordance with an embodiment of thepresent invention;

FIG. 6 is a process flow diagram of a method for inferring giftabilityscores for a product set in accordance with an embodiment of the presentinvention; and

FIG. 7 is a process flow diagram of a method for assigning a giftabilityscore to a product set according to giftability probabilities of n-gramsassociated with the product set in accordance with an embodiment of thepresent invention.

DETAILED DESCRIPTION

It will be readily understood that the components of the presentinvention, as generally described and illustrated in the Figures herein,could be arranged and designed in a wide variety of differentconfigurations. Thus, the following more detailed description of theembodiments of the invention, as represented in the Figures, is notintended to limit the scope of the invention, as claimed, but is merelyrepresentative of certain examples of presently contemplated embodimentsin accordance with the invention. The presently described embodimentswill be best understood by reference to the drawings, wherein like partsare designated by like numerals throughout.

The invention has been developed in response to the present state of theart and, in particular, in response to the problems and needs in the artthat have not yet been fully solved by currently available apparatus andmethods. Accordingly, the invention has been developed to provideapparatus and methods for determining the giftability of a product foruse in making gift recommendations.

Past activity relating to a product may be analyzed to determine whetherthe product has been the subject of gifting activity. This may includeanalyzing such factors as whether gift-wrapping has been requested whena product was ordered, whether the product description indicatessuitability for giving as a gift, or whether sales of the product surgeduring one or more holidays. By analyzing these activities, giftabilityscores may be assigned to products. A category giftability score mayalso be associated with a product by identifying responses tocategory-based or interest-based search results or advertisements. Uponreceiving a trigger or request for a gift recommendation, productsrelating to a recipient's interests may be identified and then rankedaccording to giftability scores associated with the products.

Embodiments in accordance with the present invention may be embodied asan apparatus, method, or computer program product. Accordingly, thepresent invention may take the form of an entirely hardware embodiment,an entirely software embodiment (including firmware, resident software,micro-code, etc.), or an embodiment combining software and hardwareaspects that may all generally be referred to herein as a “module” or“system.” Furthermore, the present invention may take the form of acomputer program product embodied in any tangible medium of expressionhaving computer-usable program code embodied in the medium.

Any combination of one or more computer-usable or computer-readablemedia may be utilized. For example, a computer-readable medium mayinclude one or more of a portable computer diskette, a hard disk, arandom access memory (RAM) device, a read-only memory (ROM) device, anerasable programmable read-only memory (EPROM or flash memory) device, aportable compact disc read-only memory (CDROM), an optical storagedevice, or a magnetic storage device. In selected embodiments, acomputer-readable medium may comprise any non-transitory medium that cancontain, store, communicate, propagate, or transport the program for useby or in connection with the instruction execution system, apparatus, ordevice.

Computer program code for carrying out operations of the presentinvention may be written in any combination of one or more programminglanguages, including an object-oriented programming language such asJava, Smalltalk, C++, or the like. Computer program code may also bewritten in more conventional procedural programming languages, such asthe “C” programming language or other similar programming languages. Theprogram code may execute entirely on a computer system as a stand-alonesoftware package, on a stand-alone hardware unit, partly on a remotecomputer spaced some distance from the computer, or entirely on a remotecomputer or server. In the latter scenario, the remote computer may beconnected to the computer through any type of network, including a localarea network (LAN) or a wide area network (WAN), or the connection maybe made to an external computer, i.e., through the Internet using anInternet Service Provider.

The present invention is described below with reference to flowchartillustrations and/or block diagrams of methods, apparatus (systems) andcomputer program products according to embodiments of the invention. Itwill be understood that each block of the flowchart illustrations and/orblock diagrams, and combinations of blocks in the flowchartillustrations and/or block diagrams, can be implemented by computerprogram instructions or code. These computer program instructions may beprovided to a processor of a general purpose computer, special purposecomputer, or other programmable data processing apparatus to produce amachine, such that the instructions, which execute via the processor ofthe computer or other programmable data processing apparatus, createmeans for implementing the functions/acts specified in the flowchartand/or block diagram block or blocks.

These computer program instructions may also be stored in acomputer-readable medium that can direct a computer or otherprogrammable data processing apparatus to function in a particularmanner, such that the instructions stored in the computer-readablemedium produce an article of manufacture including instruction meanswhich implement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer orother programmable data processing apparatus to cause a series ofoperational steps to be performed on the computer or other programmableapparatus to produce a computer implemented process such that theinstructions which execute on the computer or other programmableapparatus provide processes for implementing the functions/actsspecified in the flowchart and/or block diagram block or blocks.

FIG. 1 is a block diagram illustrating an example computing device 100.Computing device 100 may be used to perform various procedures, such asthose discussed herein. Computing device 100 can function as a server, aclient, or any other computing entity. Computing device 100 can performvarious monitoring functions as discussed herein, and can execute one ormore application programs, such as the application programs describedherein. Computing device 100 can be any of a wide variety of computingdevices, such as a desktop computer, a notebook computer, a servercomputer, a handheld computer, tablet computer and the like.

As shown in FIG. 1, computing device 100 includes one or moreprocessor(s) 102, one or more memory device(s) 104, one or moreinterface(s) 106, one or more mass storage device(s) 108, one or moreinput/output (I/O) device(s) 110, and a display device 130, all of whichare coupled to a bus 112. Processor(s) 102 include one or moreprocessors or controllers that execute instructions stored in memorydevice(s) 104 and/or mass storage device(s) 108. Processor(s) 102 mayalso include various types of computer-readable media, such as cachememory.

Memory device(s) 104 include various computer-readable media, such asvolatile memory, i.e., random access memory (RAM) 114, and/ornonvolatile memory, i.e., read-only memory (ROM) 116. Memory device(s)104 may also include rewritable ROM, such as flash memory.

Mass storage device(s) 108 include various computer readable media, suchas magnetic tapes, magnetic disks, optical disks, solid-state memory(e.g., flash memory), and the like. As shown in FIG. 1, a particularmass storage device is a hard disk drive 124. Various drives may also beincluded in mass storage device(s) 108 to enable reading from and/orwriting to the various computer readable media. Mass storage device(s)108 includes removable media 126 and/or non-removable media.

I/O device(s) 110 include various devices that allow data and/or otherinformation to be inputted to or retrieved from computing device 100.Example I/O device(s) 110 include cursor control devices, keyboards,keypads, microphones, monitors or other display devices, speakers,printers, network interface cards, modems, lenses, CCDs and other imagecapture devices, and the like.

Display device 130 includes any type of device capable of displayinginformation to one or more users of computing device 100. Examples ofdisplay device 130 include a monitor, display terminal, video projectiondevice, and the like.

Interface(s) 106 include various interfaces that allow computing device100 to interact with other systems, devices, or computing environments.Example interface(s) 106 include any number of different networkinterfaces 120, such as interfaces to local area networks (LANs), widearea networks (WANs), wireless networks, and the Internet. Otherinterface(s) include user interface 118 and peripheral device interface122. The interface(s) 106 may also include one or more user interfaceelements 118. The interface(s) 106 may also include one or moreperipheral interfaces such as interfaces for printers, pointing devices(mice, track pad, etc.), keyboards, and the like.

Bus 112 allows processor(s) 102, memory device(s) 104, interface(s) 106,mass storage device(s) 108, and I/O device(s) 110 to communicate withone another, as well as other devices or components coupled to bus 112.Bus 112 represents one or more of several types of bus structures, suchas a system bus, PCI bus, IEEE 1394 bus, USB bus, and the like.

For purposes of illustration, programs and other executable programcomponents are shown herein as discrete blocks, although it isunderstood that such programs and components may reside at various timesin different storage components of computing device 100, and areexecuted by processor(s) 102. Alternatively, the systems and proceduresdescribed herein can be implemented in hardware, or in a combination ofhardware, software, and/or firmware. For example, one or moreapplication specific integrated circuits (ASICs) can be programmed tocarry out one or more of the systems and procedures described herein.

FIG. 2 illustrates an example of a computing environment 200 suitablefor implementing the methods disclosed herein. In some embodiments, aserver 202 a provides access to a database 204 a in data communicationtherewith. The database 204 a may store social media information such asa user profile as well as a list of other user profiles of friends andassociates associated with the user profile. The database 204 a mayadditionally store postings made by the user associated with the userprofile. The social media information hosted by the database 204 a maycorrespond to social media such as Facebook™, Twitter™, Foursquare™,LinkedIn™, or the like. The server 202 a may provide access to thedatabase 204 a to users associated with the user profiles. For example,the server 202 a may implement a web server for receiving requests fordata stored in the database 204 a and formatting requested informationinto web pages. The web server may additionally operate to receiveinformation and store the information in the database 204 a.

A server 202 b may be associated with a merchant or by another entityproviding gift recommendation services. The server 202 b may be in datacommunication with a database 204 b. The database 204 b may storeinformation regarding various products. In particular, information for aproduct may include a name, description, categorization, reviews,comments, price, past transaction data, and the like. The server 202 bmay analyze this data as well as data retrieved from the database 204 a,described in further detail below, in order to perform methods asdescribed herein. An operator may access the server 202 b by means of aworkstation 206, that may be embodied as any general purpose computer,tablet computer, smart phone, or the like.

The server 202 a and the server 202 b may communicate with one anotherover a network 208 such as the Internet or some other local area network(LAN), wide area network (WAN), virtual private network (VPN), or othernetwork. A user may access data and functionality provided by theservers 202 a, 202 b by means of a workstation 210 in data communicationwith the network 208. The workstation 210 may be embodied as a generalpurpose computer, tablet computer, smart phone or the like. For example,the workstation 210 may host a web browser for requesting web pages,displaying web pages, and receiving user interaction with web pages, andperforming other functionality of a web browser. The workstation 210,workstation 206, servers 202 a-202 b, and databases 204 a, 204 b mayhave some or all of the attributes of the computing device 100, as shownin FIG. 1.

FIG. 3 illustrates a method 300 for selecting products according togiftability and a recipient's interests. Accordingly, the method 300 mayinclude identifying the interests of a user. This may include receivinganswers to questions regarding interests from a recipient or potentialgift giver or performing an automated analysis of information availableregarding a recipient. For example, the illustrated method 300 mayinclude steps for performing automated analysis, including analyzing 302social media content of a recipient. This may include analyzing one ormore of a recipient's profile, postings, likes, dislikes, wants, and thecomments of a recipient. Some or all of this same information may alsobe analyzed for one or more friends of the recipient as identifiedaccording to the recipient's social media data. Attributes and interestsof the recipient may be identified 304 based on the social media contentanalysis 302. Attributes may include such information as age, gender,race, location, and other personal and demographic information. Some ofthis information may be retrieved from other sources based on theidentity of the recipient.

Interests of the recipient may be identified 304 based on a simple keyword search or a more complex analysis of the concepts actuallyreferenced in the analyzed data. For example, concepts identified in acorpus of data for a recipient may be identified according to themethods for extracting and ranking concepts in documents described inU.S. patent application Ser. No. 13/300,524, entitled “PROCESSING DATAFEEDS,” filed Nov. 18, 2011, which is hereby incorporated herein byreference in its entirety. Identifying 304 interests of the recipientmay include scoring or otherwise ranking the interests according to acalculated degree of affinity for the user to the concept. This mayinclude a ranking of relevance of the interests to a corpus of textassociated with a user according to the ranking methods of the '524application, or some other method known in the art, where the corpus oftext is the recipient's social media profile and postings made on socialmedia sites or elsewhere.

A recipient profile incorporating the identified 304 attributes andinterests may be used to generate 306 a recipient profile that may bestored for later use. The interests actually stored in the profile maybe a subset of all interests that have been identified as moreimportant.

At some point either before or after a recipient profile is generated306, a recommendation trigger may be received 308. The recommendationtrigger may include an explicit request received from a user for giftrecommendations for a recipient. The recommendation trigger may also bea user viewing or requesting to view a merchant's web site. Therecommendations as generated according to methods described herein maybe presented as an unsolicited advertisement or as search results. Arecommendation trigger may also include a simple search that referencesgifting, a recipient, an occasion where gifts are conventionally given,or some other concept indicating that giftability ranking may beappropriate.

In response to receipt 308 of the recommendation trigger, the stepsdescribed herein for determining a giftable product may be performed.The steps for determining an appropriate gift may assume products havinginterests or attributes associated therewith.

Analyzing 310 the product catalog may include identifying attributes andinterests associated with each product in the catalog. This may includean analysis similar to the one performed for the social media content.For example, analyzing 310 the product catalog may include a simpleidentification of key words in a product description, or it may includea more sophisticated analysis of concepts in textual informationassociated with a product such as a product name, description, reviews,comments, social media postings, and the like. Textual information for aproduct may by analyzed 310 by performing the identification and rankingof concepts according to the methods described in the '524 applicationincorporated herein by reference.

Analyzing 312 purchase activity may include analyzing transactions inorder to identify information such as products that were purchased inthe same order. This identification may be performed for the purposes ofidentifying or clarifying common interests associated with the products.Analyzing 312 purchase activity may include analyzing responses of usersto interest-based search results or advertisements, as describedhereinbelow. The results of the analysis 310 and the analysis 312 may beused to generate 314 product interest profiles for the products in theproduct catalog. As for the recipient profile, a product profile mayinclude a subset of all interests identified as relevant to the product.For example, the top N most relevant interest for a product may beincluded in the product profile. The interests included in the productprofile for a product may also be weighted or scored based on theirrelevance to the product.

In response to receipt 308 of the recommendation trigger, the recipientprofile may be retrieved 316 and product profiles corresponding to therecipient's interests may be identified 318. The identified productprofiles may then be filtered 320 according to user attributes. Forexample, products appropriate for a female may be removed if therecipient is found to be male. As noted above, a product may be analyzedto determine the likely attributes of a consumer for that product.Accordingly, filtering 320 according to user attributes may include theremoval of products having corresponding attributes that do notcorrespond to the attributes of the recipient.

Remaining product profiles may be ranked 322 according to giftability.The product profiles may additionally be ranked 324 according to eventappropriateness. The remaining product profiles may also be ranked 326according to category appropriateness. The category or categories usedto rank 326 the products according to category appropriateness maycorrespond to one or more interests identified in the recipient profileor identified in a search that triggered 308 the generation of arecommendation. Ranking 326 according to category appropriateness maytake into account the recipient's affinity to a category or interest.For example, raking 326 may include ranking both according to arelevance score of a product to an interest of the recipient as well asthe affinity of the user to that interest. One or more of the rankings322,324, 326 may be performed simultaneously, by summing, or otherwisecombining, a giftability score and category appropriateness score foreach product and then ranking the products according to the summed orcombined scores.

The resulting list of products as ranked may be displayed or transmittedfor display to a user. As displayed, the list advantageously disclosesproducts that are both relevant to the recipient's interest and satisfya giver's desire to find an item that will delight the recipient.

FIG. 4 illustrates a method 400 for determining the giftability of aproduct. The method 400 may include receiving 402 product records. Theproduct records may be evaluated 404 to determine whether a product hasbeen specified as non-giftable. If a product is found 404 to bespecified as non-giftable, then the product may be scored 406 asnon-giftable and the method 400 may end with respect to the product. Themethod 400 may also include evaluating 408 whether the product has beenspecified as giftable. If so, then the product is scored 410 as a highlygiftable item. If a product is not found 408 to have been specified asgiftable, then product reviews relating to the product may be analyzed412. If the product reviews are found 414 to include gifting references,then the giftability for the product may be augmented 416.

The method 400 may also include analyzing 418 transactions involving theproduct. For example, if one or more transactions involving a productare found 420 to include a request to gift-wrap the product, then thegiftability for the product may be augmented 422. The amount by whichthe giftability of the product is augmented may be proportional to thenumber of orders, or proportion of orders, for a product in whichgift-wrapping was requested, or some combination or function involvingthese values.

If transactions for a product are found 424 to exhibit a spike or surgearound holidays or specific events, then the giftability may beaugmented 426. The amount of augmentation of giftability may be inproportion to the size of the spike or surge. For example, giftabilitymay be augmented if the sales volume V_(holiday) for the month ofDecember, or some other holiday period, is larger than a specifiedpercentage of sales volume V_(year) for the year, i.e.,V_(holiday)>rV_(year), where r is a value less than 1. The amount bywhich the giftability for the product is augmented may increase based onthe amount by which the sales volume around the holiday exceeds thevalue rV_(year).

The method 400 may additionally include analyzing 428 a productdescription for the product, if the product description is found 430 tohave attributes indicating giftability, then the giftability of theproduct may be augmented 432; otherwise, the method 400 may end. Anexample of a “giftability attribute” may include an indication that aproduct is a collector's item or that a product is especiallyentertaining or fun in some way.

The various giftability augmentation steps 416, 422, 428, 432 mayinclude adding a value to a giftability score that was initially equalto zero. Alternatively, augmentation may be performed according to anyarbitrary function. For example, the augmentation steps 416, 422, 428,432 may be weighted prior to addition.

Referring to FIG. 5, as noted with respect to the method 300 of FIG. 3,products may be ranked 324 according to event appropriateness and/orranked 326 according to category appropriateness. The method 500 of FIG.5 may be used to score products according to appropriateness for acategory or event. For purposes of the method 500, an event may beprocessed in the same manner as a category in order to generate anappropriateness score for a product corresponding to the event.

The method 500 may include evaluating 502 user responses tocategory-based search results 502. As noted with respect to FIG. 3, aproduct may have interests and attributes associated therewith. A usermay search a product catalog or search engine for products relating to aparticular category. Products having related interests corresponding tothat category may be presented as results for the search. The categorymay be identical to a specific interest or relate to a plurality ofinterests. A user response to these search results may be the subject ofthe evaluation 502. If user interaction with a search result referencinga product is found 504 to have occurred, then a category giftabilityscore for the category defined by the search may be augmented 506 forthe product.

The initial value for a category giftability score may be based on theproduct's attributes. The product attributes may include acategorization in a product catalog, a text description, a genderdesignation, an appropriate age, and other data. Some of theseattributes may simply map to an attribute that can be sued in a productprofile. Other attributes may be analyzed to identify concepts relatingto the product. For example, a product description and other informationmay be used as a document that is analyzed to identify concepts, such asusing the methods for identifying and ranking concepts in a documentdescribed U.S. patent application Ser. No. 13/300,524, entitled“PROCESSING DATA FEEDS,” filed Nov. 18, 2011, which is herebyincorporated herein by reference in its entirety. Concepts associatedwith the product according to the foregoing methods may receive a scoreindicating their relatedness to the concept. These scores may be used asinitial values for the category giftability score and may be used toselect products in response to category-based search results or topresent category-based advertisements. These scores may also beaugmented or decremented in response to user interaction as describedbelow.

User responses may include any interaction with the search result, suchas a mouse-over event, a click, a purchase originating from the searchresults, or any other interaction. The category giftability score forthe product corresponding to the category defined in the search may beaugmented 506 according to user interaction. The category score may beaugmented 506 by different amounts for different types of interactions.For example, a mouse-over event may be scored a first amount, a clickmay be scored a second amount larger than the first amount, and apurchase may be scored a third amount larger than the second amount.

The amount by which the category giftability score is augmented may benormalized or otherwise adjusted according to the number of times theproduct has appeared in searches relating to the category correspondingto the category giftability score. For example, the value computedaccording to augmenting step 506 may be divided by the number of timesthe product has appeared in searches relating to the category.

The method 500 may further include evaluating 508 user responses tocategory-based advertisements or recommendations. A category-basedadvertisement or recommendation may be displayed with search results fora search or request related to a category. Category-based advertisementsmay also be displayed with content relating to a category. Accordingly,responses to advertisements for a product that have been displayedbecause of a relationship to the product of the same category as thecontent or search may be evaluated 508. If user interaction with thecategory-based advertisement for a product is found 510 to haveoccurred, then the category giftability of the product with respect tothe category of the content or search result may be augmented 512.

As for the augmentation step 506, user responses may include anyinteraction with the search result, such as a mouse-over event, a click,a purchase originating from the search results, or any otherinteraction. The category score for the product corresponding to thecategory associated with the advertisement may be augmented 512according to user interaction. The category score may be augmented 512by different amounts for different types of interactions. For example, amouse-over event may be scored a first amount, a click may be scored asecond amount larger than the first amount, and a purchase may be scoreda third amount larger than the second amount. If no interaction withcategory-based advertisements or search results is found 504 or 510 tohave occurred, the category score (which may be zero) may remainunchanged.

The amount by which the category giftability score is augmented 512 maybe normalized or otherwise adjusted according to the number of times theproduct has appeared in advertisements displayed for content or searchresults relating to the category corresponding to the categorygiftability score. For example, the value computed according toaugmenting step 512 may be divided by the number of times the producthas appeared in advertisements relating to the category.

In order to determine event appropriateness of a product, the method 500may be performed in the same way except that the “category” that isreferenced in a search result or that gave rise to an advertisement orrecommendation may be an event, such as a holiday, birthday, sportingevent, or some other occasion.

Referring to FIG. 6, in some instances data used according to the method500 of FIG. 5 may not be available. This may be the case when evaluatingnew products that have not previously been sold by a merchant or when acatalog of a competitor or vendor is being analyzed for possiblemerchandising or affiliation. Accordingly, the illustrated method 600may use giftability and other information for a first product set, orseed set, to infer the giftability of a second product set.

The method 600 may include calculating 602 giftability scores for afirst product set. A giftability score may be coded using any type ofvalue or variable. For example, a giftability score may be a giftabilityprobability between 0 and 1 or a binary true or false value. Calculating602 the giftability score may include evaluating the first product setaccording to the method 400 of FIG. 4. In some instances, giftabilityscores for some or all of the products of the first product set may beexplicitly defined by user input.

The attributes of the products of the first product set may then beanalyzed to identify 604 a correlation between a product's giftabilityscore and the attributes associated therewith. The attributes mayinclude textual attributes associated with a product such as a title,description, reviews, comments, social media content, categorization orclassification information, and other textual information. Theattributes of a product may also include non-textual information such asa price, a weight or normalized weight, and one or more dimensions, suchas a three-dimensional shipping size.

The attributes of a second product set may then be evaluated 606 and acorrespondence between the attributes of the second product set and theattributes of the first product set may then be identified 608.Giftability scores may then be assigned 610 to the second product setaccording to the correspondence between the attributes of the firstproduct set and the attributes of the second product set.

FIG. 7 illustrates an example of a method 700 for implementing themethod 600 of FIG. 6. The method 700 may be used to determine thegiftability of a second product set according to a known giftability ofa first product set or “seed” product set. The method 700 includesdetermining 702 the giftability of the first product set. This mayinclude evaluating the product set according to the method 400 and/orreceiving a manually specified giftability score for the seed set.

Each product in the first product set may have a plurality of attributeseach embodied as a textual attribute paired with a textual value. One ormore of the products of the first product set may also includenon-textual attributes, such as a price or other numeric or coded data.

One or more “n-grams” may be identified 704 for each textual attributeof each product. Multiple n-grams may incorporate the same words of atextual attribute. As known in the art, an n-gram is a contiguoussequence of n items from a given sequence of text or speech. An n-gramcould be any combination of letters or words and may include white spacesuch as tabs, spaces, etc.

Correspondence between the ngrams and giftability may then be calculated706 for the n-grams of some or all of the textual attributes of theproducts in the first product set. This may include calculating amaximum likelihood estimation for some or all of the n-grams of thefirst product set for each textual attribute. This may involve, for eachtextual attribute of products in the first product set, calculating apositive maximum likelihood estimate {circumflex over (P)}(k_(a)|+) anda negative maximum likelihood estimate {circumflex over (P)}(k_(a)|−)according to (1) and (2). In (1) and (2), count(k_(a)∩+) andcount(k_(a)∩−) represent the number of occurrences of the n-gram k_(a)in a specified textual attribute of giftable products and non-giftableproducts, respectively. Values {circumflex over (P)}(+) and {circumflexover (P)}(−) may also be calculated according to (3) and (4), whereincount(+) is the total number of giftable products in the first productset and count(−) is the total number of non-giftable products in thefirst product set.

$\begin{matrix}{{\hat{P}\left( k_{a} \middle| + \right)} = \frac{{count}\left( {k_{a}\bigcap +} \right)}{{count}( + )}} & (1) \\{{\hat{P}\left( k_{a} \middle| - \right)} = \frac{{count}\left( {k_{a}\bigcap -} \right)}{{count}( - )}} & (2) \\{{\hat{P}( + )} = \frac{{count}( + )}{{{count}( + )} + {{count}( - )}}} & (3) \\{{\hat{P}( - )} = \frac{{count}( - )}{{{count}( + )} + {{count}( - )}}} & (4)\end{matrix}$

For purposes of the method 700, a product may be labeled as giftable ornon-giftable. Where a numeric giftability score has been computed, aproduct may be labeled as giftable where the giftability score exceeds afirst threshold. A product may be labeled as non-giftable where thegiftability score is less than a second threshold. The first and secondthresholds may be differently valued. In some embodiments, some productsin the first product set may not be labeled as giftable or non-giftablewhere the giftability score of the product lies between the first andsecond thresholds.

A value y representing the “inferred giftability odds” may be calculatedfor some or all textual attributes of some or all products in a productset according to (5) using the values of {circumflex over (P)}(k_(a)|+)and {circumflex over (P)}(k_(a)|−) for the textual attribute. Equation(5) derives from the Naïve-Bayes method and assumes independence fromobserving any n-gram for both giftable and non-giftable products. In (5)the values of {circumflex over (P)}(k_(a)|+) and {circumflex over(P)}(k_(a)|−) used in the sequence product are only those correspondingto the n-grams k₁ . . . k_(n) of the textual attribute of the productcorresponding to the value y.

$\begin{matrix}{y = {\log \; \frac{\prod_{a = 1}^{n}{{P\left( k_{a} \middle| + \right)}{P( + )}}}{\prod_{a = 1}^{n}{{P\left( k_{a} \middle| - \right)}{P( - )}}}}} & (5)\end{matrix}$

In some instances, it is possible that one or more products may notdefine one or more textual attributes that are defined by otherproducts. In such instances the value of y for the textual attribute ofsuch products may be calculated according to (6).

$\begin{matrix}{\hat{y} = {\log \; \frac{\hat{P}( + )}{\hat{P}( - )}}} & (6)\end{matrix}$

Once the value of y for the textual attributes of the products of thefirst product set are known, weights a, b, c may be determined 708 foruse in equation (7). The values b and c may be vectors of values eachcorresponding to a particular textual or non-textual attribute,respectively, whereas a may represent a scalar value chosen to achievean appropriate value of P_(i). In (7), P_(i) represents the inferredgiftability probability for a product i, X_(i) is a vector ofnon-textual attributes for the product i, and Y_(i) is the vector of thevalues y for the textual attributes of the product i.

$\begin{matrix}{P_{i} = \frac{1}{1 + ^{- {({a + {bX}_{i} + {CYi}})}}}} & (7)\end{matrix}$

The weights a, b, and c may be calculated using one or more iterationsof logistic regression. In particular, the weights a, b, and c may becalculated such that applying (7) to the first product set yields avalue of P_(i) that reflects the actual giftability score or thenon-giftable/giftable designation for the product. The values of P_(i)range from 0.5 for non-giftable products to 1.0 for an “infinitely”giftable product.

The method 700 may then include identifying 710 the textual attributesof the second product set and identifying 712 the n-grams of theidentified textual attributes. An inferred giftability score may then becalculated 714 for the second product set. For each textual attribute ofeach product, a value y may be calculated using the values of{circumflex over (P)}(k_(a)|+) and {circumflex over (P)}(k_(a)|−)corresponding to the textual attribute as calculated using the firstproduct set. In other words, the values of {circumflex over(P)}(k_(a)|+) and {circumflex over (P)}(k_(a)|−) corresponding to atextual attribute and the n-grams k_(a) found in the textual attributeof a product of the second product set may be used to calculate a valuey for that textual attribute according to (5) or (6). The y values(Y_(i)) for the textual attributes of a product i in the second productset and any non-textual values (X_(i)) for the product may be inputtedto (7) using the previously calculated weights a, b, and c in order tocalculate the inferred giftability score P_(i) for the product.

The inferred giftability score may be used in any of the methodsdisclosed herein. For example, the inferred giftability score may beused to rank a product according to giftability in the context of themethod 300 of FIG. 3. The inferred giftability score may also be usedfor other purposes such as selecting products to carry or evaluating thevalue of partnering with a prospective affiliate.

The present invention may be embodied in other specific forms withoutdeparting from its spirit or essential characteristics. The describedembodiments are to be considered in all respects only as illustrative,and not restrictive. The scope of the invention is, therefore, indicatedby the appended claims, rather than by the foregoing description. Allchanges which come within the meaning and range of equivalency of theclaims are to be embraced within their scope.

What is claimed is:
 1. A method for recommending gifts, the methodcomprising: identifying, by a server, interests of a recipient;identifying, by the server, products corresponding to the identifiedinterests; ranking, by the server, the identified products according toa giftability associated with each identified product, the giftabilityindicating suitability of the identified product for giving as a gift;and transmitting, by the server, the ranked products for display.
 2. Themethod of claim 1, wherein the giftability associated with eachidentified product is calculated according to holiday surges in salesfor the identified product.
 3. The method of claim 1, wherein thegiftability associated with each identified product is calculatedaccording to gifting references in at least one of comments and reviewsassociated with the identified product.
 4. The method of claim 1,wherein the giftability associated with each identified product iscalculated according to gifting indicators in a product descriptionassociated with the identified product.
 5. The method of claim 1,wherein the giftability associated with each identified product iscalculated according to gift wrapping requests received in orders topurchase the identified product.
 6. The method of claim 1, wherein thegiftability associated with each product is calculated according to userresponses to presentation of the identified product in category-basedsearch results, the category-based search results being relevant to atleast one of the identified interests of the recipient.
 7. The method ofclaim 1, wherein the giftability associated with each product iscalculated according to user responses to presentation of the identifiedproduct in category-based advertisements, the category-basedadvertisements being relevant to at least one of the identifiedinterests of the recipient.
 8. The method of claim 1, wherein thegiftability associated with each identified product is calculatedaccording to an association of the identified product to at least one ofan event and an occasion.
 9. The method of claim 1, wherein identifyingproducts corresponding to the identified interests further comprisescomparing an interest profile of the identified products to an interestprofile of the recipient.
 10. The method of claim 1, wherein identifyinginterests of a recipient further comprises identifying interests offriends of the recipient in a social network.
 11. The method of claim 1,wherein the interests of the recipient each have an affinity scoreindicating the affinity of the recipient to the interest; whereinranking, by the server, the identified products according to thegiftability associated with each identified product further comprisesranking the identified products according to both the giftability of theidentified products and the affinity scores of interests correspondingto the identified products.
 12. A system for recommending giftscomprising one or more processors and one or more memory devicesoperably coupled to the one or more processors, the one or more memorydevices storing executable and operational data effective to cause theone or more processors to: identify interests of a recipient; identifyproducts corresponding to the identified interests; rank the identifiedproducts according to a giftability associated with each identifiedproduct, the giftability indicating suitability of the identifiedproduct for giving as a gift; and transmit the ranked products fordisplay.
 13. The system of claim 12, wherein executable and operationaldata are further effective to cause the one or more processors tocalculate the giftability associated with each identified productaccording to a holiday surge in sales for the identified product. 14.The system of claim 12, wherein executable and operational data arefurther effective to cause the one or more processors to calculate thegiftability associated with each identified product according to giftingreferences in at least one of comments and reviews associated with theidentified product.
 15. The system of claim 12, wherein executable andoperational data are further effective to cause the one or moreprocessors to calculate the giftability associated with each identifiedproduct according to gifting indicators in a product descriptionassociated with the identified product.
 16. The system of claim 12,wherein executable and operational data are further effective to causethe one or more processors to calculate the giftability associated witheach identified product according to gift wrapping requests received inorders to purchase the identified product.
 17. The system of claim 12,wherein executable and operational data are further effective to causethe one or more processors to calculate the giftability associated witheach identified product according to user responses to presentation ofthe identified product in category-based search results, thecategory-based search results being relevant to at least one of theidentified interests of the recipient.
 18. The system of claim 12,wherein executable and operational data are further effective to causethe one or more processors to calculate the giftability associated witheach identified product according to user responses to presentation ofthe identified product in category-based advertisements, thecategory-based advertisements being relevant to at least one of theidentified interests of the recipient.
 19. The system of claim 12,wherein executable and operational data are further effective to causethe one or more processors to calculate the giftability associated witheach identified product according to an association of the identifiedproduct to one of an event and an occasion.
 20. The system of claim 12,wherein executable and operational data are further effective to causethe one or more processors to identify products corresponding to theidentified interests by comparing an interest profile of the identifiedproducts to an interest profile of the recipient.
 21. The system ofclaim 12, wherein executable and operational data are further effectiveto cause the one or more processors to identify interests of a recipientby identifying interests of friends of the recipient in a socialnetwork.
 22. The system of claim 12, wherein the interests of therecipient each have an affinity score indicating the affinity of therecipient to the interest; wherein the executable and operational dataare further effective to cause the one or processors to rank theidentified products according to the giftability associated with eachidentified product by ranking the identified products according to boththe giftability of the identified products and the affinity scores ofinterests corresponding to the identified products.